1 /*****************************************************************************
2 * dbus.c : D-Bus control interface
3 *****************************************************************************
4 * Copyright (C) 2006 Rafaël Carré
7 * Author: Rafaël Carré <funman at videolanorg>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
25 * D-Bus Specification:
26 * http://dbus.freedesktop.org/doc/dbus-specification.html
27 * D-Bus low-level C API (libdbus)
28 * http://dbus.freedesktop.org/doc/dbus/api/html/index.html
35 * macros to read incoming arguments
37 * explore different possible types (arrays..)
39 * what must we do if org.videolan.vlc already exist on the bus ?
40 * ( there is more than one vlc instance )
43 /*****************************************************************************
45 *****************************************************************************/
47 #include <dbus/dbus.h>
52 #include <sys/types.h> /* getpid() */
53 #include <unistd.h> /* getpid() */
60 #include <vlc_input.h>
62 /*****************************************************************************
64 *****************************************************************************/
66 static int Open ( vlc_object_t * );
67 static void Close ( vlc_object_t * );
68 static void Run ( intf_thread_t * );
71 static int ItemChange( vlc_object_t *p_this, const char *psz_var,
72 vlc_value_t oldval, vlc_value_t newval, void *p_data );
76 DBusConnection *p_conn;
79 /*****************************************************************************
81 *****************************************************************************/
84 set_shortname( _("dbus"));
85 set_category( CAT_INTERFACE );
86 set_subcategory( SUBCAT_INTERFACE_CONTROL );
87 set_description( _("D-Bus control interface") );
88 set_capability( "interface", 0 );
89 set_callbacks( Open, Close );
92 /*****************************************************************************
94 *****************************************************************************/
96 DBUS_METHOD( Nothing )
105 playlist_t *p_playlist = pl_Yield( (vlc_object_t*) p_this );
106 playlist_Stop( p_playlist );
107 pl_Release( ((vlc_object_t*) p_this) );
108 ((vlc_object_t*)p_this)->p_libvlc->b_die = VLC_TRUE;
113 { /* next playlist item */
115 playlist_t *p_playlist = pl_Yield( ((vlc_object_t*) p_this) );
116 playlist_Next( p_playlist );
117 pl_Release( ((vlc_object_t*) p_this) );
122 { /* previous playlist item */
124 playlist_t *p_playlist = pl_Yield( ((vlc_object_t*) p_this) );
125 playlist_Prev( p_playlist );
126 pl_Release( ((vlc_object_t*) p_this) );
133 playlist_t *p_playlist = pl_Yield( ((vlc_object_t*) p_this) );
134 playlist_Stop( p_playlist );
135 pl_Release( ((vlc_object_t*) p_this) );
139 DBUS_METHOD( GetPlayingItem )
140 { /* return the current item */
143 char psz_no_input = '\0';
144 char *p_psz_no_input = &psz_no_input;
145 playlist_t *p_playlist = pl_Yield( ((vlc_object_t*) p_this) );
146 input_thread_t *p_input = p_playlist->p_input;
147 ADD_STRING( ( p_input ) ? &p_input->input.p_item->psz_name :
149 pl_Release( ((vlc_object_t*) p_this) );
153 DBUS_METHOD( GetPlayStatus )
154 { /* return a string */
160 playlist_t *p_playlist = pl_Yield( (vlc_object_t*) p_this );
161 input_thread_t *p_input = p_playlist->p_input;
164 psz_play = strdup( "stopped" );
167 var_Get( p_input, "state", &val );
168 if( val.i_int == PAUSE_S )
169 psz_play = strdup( "pause" );
170 else if( val.i_int == PLAYING_S )
171 psz_play = strdup( "playing" );
172 else psz_play = strdup( "unknown" );
175 pl_Release( p_playlist );
177 ADD_STRING( &psz_play );
182 DBUS_METHOD( TogglePause )
183 { /* return a bool: true if playing */
188 playlist_t *p_playlist = pl_Yield( (vlc_object_t*) p_this );
189 input_thread_t *p_input = p_playlist->p_input;
190 if( p_input != NULL )
192 var_Get( p_input, "state", &val );
193 if( val.i_int != PAUSE_S )
196 playlist_Pause( p_playlist );
200 val.i_int = PLAYING_S;
201 playlist_Play( p_playlist );
206 val.i_int = PLAYING_S;
207 playlist_Play( p_playlist );
209 pl_Release( p_playlist );
211 dbus_bool_t pause = ( val.i_int == PLAYING_S ) ? TRUE : FALSE;
216 DBUS_SIGNAL( NewInstance )
217 { /* emits a signal with vlc pid */
218 SIGNAL_INIT( "NewInstance" );
220 dbus_uint32_t i_pid = (dbus_uint32_t) getpid();
221 ADD_UINT32( &i_pid );
225 DBUS_METHOD( AddMRL )
226 { /* add the string to the playlist, and play it if the boolean is true */
230 dbus_error_init( &error );
235 dbus_message_get_args( p_from, &error,
236 DBUS_TYPE_STRING, &psz_mrl,
237 DBUS_TYPE_BOOLEAN, &b_play,
240 if( dbus_error_is_set( &error ) )
242 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s\n",
244 dbus_error_free( &error );
245 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
248 playlist_t *p_playlist = pl_Yield( (vlc_object_t*) p_this );
249 playlist_Add( p_playlist, psz_mrl, NULL, PLAYLIST_APPEND |
250 ( ( b_play == TRUE ) ? PLAYLIST_GO : 0 ) , PLAYLIST_END, VLC_TRUE );
251 pl_Release( p_playlist );
256 /*****************************************************************************
257 * Introspection method
258 *****************************************************************************/
260 DBUS_METHOD( handle_introspect )
261 { /* handles introspection of /org/videolan/vlc */
264 ADD_STRING( &psz_introspection_xml_data );
268 /*****************************************************************************
269 * handle_messages: answer to incoming messages
270 *****************************************************************************/
272 #define METHOD_FUNC( method, function ) \
273 else if( dbus_message_is_method_call( p_from, VLC_DBUS_INTERFACE, method ) )\
274 return function( p_conn, p_from, p_this )
276 DBUS_METHOD( handle_messages )
277 { /* the main handler, that call methods */
279 if( dbus_message_is_method_call( p_from,
280 DBUS_INTERFACE_INTROSPECTABLE, "Introspect" ) )
281 return handle_introspect( p_conn, p_from, p_this );
283 /* here D-Bus method's names are associated to an handler */
285 METHOD_FUNC( "GetPlayStatus", GetPlayStatus );
286 METHOD_FUNC( "GetPlayingItem", GetPlayingItem );
287 METHOD_FUNC( "AddMRL", AddMRL );
288 METHOD_FUNC( "TogglePause", TogglePause );
289 METHOD_FUNC( "Nothing", Nothing );
290 METHOD_FUNC( "Prev", Prev );
291 METHOD_FUNC( "Next", Next );
292 METHOD_FUNC( "Quit", Quit );
293 METHOD_FUNC( "Stop", Stop );
295 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
298 /*****************************************************************************
299 * Open: initialize interface
300 *****************************************************************************/
302 static int Open( vlc_object_t *p_this )
303 { /* initialisation of the connection */
304 intf_thread_t *p_intf = (intf_thread_t*)p_this;
305 intf_sys_t *p_sys = malloc( sizeof( intf_sys_t ) );
306 playlist_t *p_playlist;
307 DBusConnection *p_conn;
313 dbus_threads_init_default();
315 dbus_error_init( &error );
317 /* connect to the session bus */
318 p_conn = dbus_bus_get( DBUS_BUS_SESSION, &error );
321 msg_Err( p_this, "Failed to connect to the D-Bus session daemon: %s",
323 dbus_error_free( &error );
328 /* we unregister the object /, registered by libvlc */
329 dbus_connection_unregister_object_path( p_conn, "/" );
331 /* we register the object /org/videolan/vlc */
332 dbus_connection_register_object_path( p_conn, VLC_DBUS_OBJECT_PATH,
333 &vlc_dbus_vtable, p_this );
335 dbus_connection_flush( p_conn );
337 p_playlist = pl_Yield( p_intf );
339 var_AddCallback( p_playlist, "playlist-current", ItemChange, p_intf );
341 pl_Release( p_playlist );
343 p_intf->pf_run = Run;
344 p_intf->p_sys = p_sys;
345 p_sys->p_conn = p_conn;
350 /*****************************************************************************
351 * Close: destroy interface
352 *****************************************************************************/
354 static void Close ( vlc_object_t *p_this )
356 intf_thread_t *p_intf = (intf_thread_t*) p_this;
357 playlist_t *p_playlist = pl_Yield( p_intf );;
360 var_DelCallback( p_playlist, "playlist-current", ItemChange, p_intf );
362 pl_Release( p_playlist );
364 free( p_intf->p_sys );
367 /*****************************************************************************
369 *****************************************************************************/
371 static void Run ( intf_thread_t *p_intf )
373 NewInstance( p_intf->p_sys->p_conn, NULL );
375 while( !p_intf->b_die )
377 msleep( INTF_IDLE_SLEEP );
378 dbus_connection_read_write_dispatch( p_intf->p_sys->p_conn, 0 );
382 /*****************************************************************************
383 * ItemChange: Playlist item change callback
384 *****************************************************************************/
386 DBUS_SIGNAL( ItemChangeSignal )
387 { /* emit the name of the new item */
388 SIGNAL_INIT( "ItemChange" );
391 input_thread_t *p_input = (input_thread_t*) p_data;
392 ADD_STRING( &p_input->input.p_item->psz_name );
397 static int ItemChange( vlc_object_t *p_this, const char *psz_var,
398 vlc_value_t oldval, vlc_value_t newval, void *p_data )
400 intf_thread_t *p_intf = ( intf_thread_t* ) p_data;
401 intf_sys_t *p_sys = p_intf->p_sys;
402 playlist_t *p_playlist;
403 input_thread_t *p_input = NULL;
404 (void)p_this; (void)psz_var; (void)oldval; (void)newval;
406 p_playlist = pl_Yield( p_intf );
408 p_input = p_playlist->p_input;
413 pl_Release( p_playlist );
417 vlc_object_yield( p_input );
419 pl_Release( p_playlist );
421 ItemChangeSignal( p_sys->p_conn, p_input );
423 vlc_object_release( p_input );